Process for die casting



May 13 1.924.4 y l o. DE cARDY PROCESS FOR DIE CASTING Illll PatentedMay i3, lfZl.

UNiTEo sraras QflTO DE GARDY, OF CHICAGOyILLINOIS.

PROCESS FOR DIE CASTING.

Application led June 23, 1922. Serial No. 570,426.

T 0 all whom t may concern.' n

Be it known that I, OTTO DE Canoa', a citizen of the United States,residing in Chicago, Cook County, Illinois, have invented certain newand useful Improvements in Processes for Die Castings, of which thefollowing, taken in connection with the drawing, is a description.

My invention has Jfor its object the process of castings moulded overnon-metallic materials, such for instance as liber, bakelite, Celluloid,rubber and the like, which may be used in a great variety of places indierent kinds of work.

It is an object of my invention to cast a metal frame over or aroundsuch materials where needed for insulating in electrical work, toprovide conduits Jfor carrying wires or forming brackets for same orextending wires through openings in certain places where a sustainingmember may be needed and desired to be formed of material, such as abovenamed.

It is a further object of my invention to provide a process for castingmetal over or around such materials as above enumerated which may beused for ornaments, such as buckles, buttons or the like, such forinstance as are frequently used in political campaigns, and together maybe printed upon a paper placed between pieces of transparent celluloidand a form cast around them which securely holds the parts in place andwithout in any way injuring the transparent material.

In the accompanying drawings I have illustrated different forms ofconstruction showing the possibilities yof moulding such metals as whitebrass or zinc alloy metals byy ycasting at approximately 900 degreesFahrenheit and by inserting the bakelite or other material in any shapeor form in the mould and casting the metal around it to form the shapedesired.

The conventional orms shown in the drawing are merely illustrative ofthe die mould in my invention and in these drawingsy Figure l is a planview of a metallic disk cast about an insulating member,

Figure 2 is a sectional view through the same,

Figure `3 is a plan view taken Jfrom the seat opposite to that shown inFigure l,

Figure 4 is a plan view of a button trame cast with my process,

Figure 5 is a sectional view taken on line 5-5 of Figure 4:. v

In referring to the drawings A represents a disk or frame of anymaterial such as fiber, bakelite, rubber or the like, which may be of`any size or shape desired for the purpose intended and which is placedin a mould of suitable design for the frame,'housing or covering B. Anywhite brass or zinc alloy metals which will mould at approximately 900degrees heat is poured in a mould and surrounds the frame A, securelyholding it formed by utilizing an inset of paper which f may haveprinted matter thereon for advertising or any image, such as the face ashown in Fig. 5, which is provided with a transparent covering 0 0 onboth sides thereof of the same size and contour as the paper inset@After placing these parts a-c-c in proper relation to each other,

they are placed in the mould and the molten metal cast therein whichforms the frame C, ,enclosing the edges of the paper a and the covertransparent disks 0.o. The eyelet 02 may be cast on the rim of the frameor other fastening means may be provided if desired. It will beunderstood that I contemplate the yuse of various shapes and designs andof various styles and ornamentations, where buttons, pins, buckles.ymedallions or the like are made, as well as any size, shape or contourof structure for maintaining insulating members in electrical work ofany kind.

A process of die casting which consists in arranging an inset of anon-metallic substance in a mold design to form a frame having fixedengagement With said non-metallic substance, then pouring molten metalinto said mold at a temperature Which will soften that portion of thenon-metallic substance contacting With the molten metal and Weld themeeting faces thereof together to form a permanent union between thenon-metallic substance and the metal.. 10

In testimony whereof I have signed this speoication.

OTTO DE CARD Y.

